harumachi_nagaaki
A nijiura artist and player of Sega's BORDER BREAK. He always uses graphite (medium).
Japanese name: 春待 長秋 (Harumachi Nagaaki) (The name came from his BORDER BREAK player account, though he is rarely called that)
Nickname on nijiura: はるざむらいあき or 春侍あき (Haruzamurai-aki)